A spiropyran-based X-ray sensitive fiber

This study attempted to visualize reversible X-ray radiation by using a poly-(L-lactic acid) (PLLA) composite fiber with an average diameter of 150 μm. The fiber contains photostimulable phosphor (PSP) BaFCl:Eu2+ particles that are subsequently dyed with the photochromic spiropyran dye (1,3,3-trimethylindolino-6′-nitrobenzopyrylospiran) (6-nitro BIPS).